Mary Gallagher, CNP
NPI 1093258832 · Family Nurse Practitioner · Charleston, SC
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Gallagher, CNP is a Family Nurse Practitioner provider in Charleston, SC (NPI 1093258832).
Provider details
- NPI number
- 1093258832
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CNP
- Sex
- Female
- Sole proprietor
- No
- License
- 2273041 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
222 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Telehealth Consultation, Emergency Department Or Initial Inpatient, Typically 50 Minutes Communicating With the Patient Via TelehealthG0426 | 88 | $104 |
| Telehealth Consultation, Emergency Department Or Initial Inpatient, Typically 70 Minutes Or More Communicating With the Patient Via TelehealthG0427 | 86 | $148 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 20 | $94 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 17 | $138 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 11 | $63 |
Typical Medicare-allowed amounts for these services range $63–$148 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$141 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-11-28
- Last updated
- 2021-01-26
- Certified
- 2021-01-26
Frequently asked questions
- What is Mary Gallagher's NPI number?
- Mary Gallagher's National Provider Identifier (NPI) is 1093258832, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Gallagher's specialty?
- Mary Gallagher is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Gallagher located?
- Mary Gallagher's practice location on file with NPPES is 171 Ashley Ave, Charleston, SC 29425-1218.
- What is Mary Gallagher's phone number?
- The practice phone number listed in the NPPES registry for Mary Gallagher is (843) 792-1414.
- Does Mary Gallagher accept Medicare?
- Mary Gallagher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Gallagher's NPI active?
- Yes — Mary Gallagher's NPI (1093258832) is active in the NPPES registry as of the last update on 2021-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.